diff options
Diffstat (limited to 'test/481-regression-phi-cond/src/Main.java')
-rw-r--r-- | test/481-regression-phi-cond/src/Main.java | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/test/481-regression-phi-cond/src/Main.java b/test/481-regression-phi-cond/src/Main.java new file mode 100644 index 0000000000..bad9669048 --- /dev/null +++ b/test/481-regression-phi-cond/src/Main.java @@ -0,0 +1,51 @@ +/* +* Copyright (C) 2015 The Android Open Source Project +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + + +public class Main { + public static void assertBooleanEquals(boolean expected, boolean result) { + if (expected != result) { + throw new Error("Expected: " + expected + ", found: " + result); + } + } + + public static boolean inlinePhi(boolean x, boolean y, boolean z) { + boolean phi; + if (z) { + phi = x; + } else { + phi = y; + } + return phi; + } + + public static boolean dontUseParam(boolean x) { + return false; + } + + public static boolean testCase(boolean x, boolean y, boolean z) { + // First create a Phi(x, y). + boolean phi = inlinePhi(x, y, z); + // Now use the phi as a condition which the boolean simplifier will try to + // optimize out. If the result is not used, the algorithm will try to remove + // the original condition (phi) and crash. + return dontUseParam(phi == false ? false : true); + } + + public static void main(String[] args) { + assertBooleanEquals(false, testCase(true, true, true)); + } +} |